All metal gimped material



July 12, 1932. R, B} KlNGMAN 1,867,157

ALL METAL GIMPED MATERIAL- Filed Nov. 1, 1930 INVEN TOR. fimns'ellfi de y WWW ATTORNEY Patented July 12, 1932 UNITED STATES PATIENT OFFICE- RUSSELL B. Kinsman, or ORANGE, NEW JERSEY; AssreNoE' To, METAL TEXTILE 00E- ronarrron, o w sT oEA eE, NEW JERSEY, A CORPORATION or DELAWARE I ALL METAL GIMPED MATERIAL Application filed Hovember This invention relates to improvements in metal gimped material from which may be fabricated various articles, such e. g., as abrasive scouring devices, pot cleaners, dish and bottle mops, filter pads and various other articles produced entirely from metal gimped strands, or in which metal gimped strands are incorporated.

Heretofore metal ,gim ped strands have comprised a flexible carrier member or core,

' usually made of textile yarn, cord or similar fibrous material, upon which is spirally wound or convolved a. gimping of metallic wire. Carrier members or cores of textile yarn or vegetable fiber are not altogether vsatisfactory, since the same are subject to comparatively rapid deterioration in use, and being absorbent are not as sanitary as a nonabsorbent material would be. A flexible metallic wire, if employed as the carrier member or'core of the metal gimped material, would avoid the objections above mentioned. It has been found,'however,-that a smooth nietallio'carr'ier wire or core is not easy to gimp, since it does' not readily draw off the loops of the gimping from the needle or mandrel of the gimping machine on which the gimped, material is made. 1 This is due to the fact that ordinarily the hard smooth carrier wire too easily slips relative to the loops or convolutions of'the *gimp ing, thus allowing the same to pile up on the forming mandrel or needle instead of being drawn terial lS,dlfllCl11t to handle in fabricating therefromdesired forms of articles into the structure of which the material is incorporated. Even thoughsuch all metal form of gimped material can, although with 'difli culty, be fabricated into desired articles, the stability of the gimping in the finished article is not assured, since the too easy sliding of the gimping on the smooth metal carrier wire or" core, results in unequal distribution of the gimping, i. e. at some points e stringy on.

1, 1930. Serial No. 492,781.

therewould be too much gimping'and at others too little, and the desired uniformity of structure and appearance of the article would be thus impaired.

It is the object of this invention, therefore, to provide an all metal gimped material or strand, comprising a novel flexible metallic carrier wire or core having a friction surface toengage and support the convolutions of the metal gimping applied thereto, so that said gimping convolutions will not only be more surely and uniformly drawn ofi the needle or mandrel of a gimping machine by which they are produced, but also will be maintained in comparatively uniformly spaced distribution along the core, and held -=by the friction effect provided at the core against undue displacement as thus distributed, both during theoperations of fabricating the material into desired forms of articles, as well as during the use of the fabricated article. To this end I provide a flexi-v ble metallic carrier wire or core, so prepared andformed as to provide. along its length surface irregularities of a character adapted to adequately roughen the same to provide a frictional surface without unduly interferin with its desired flexibility.

Illustrative embodiments ofthis invention are shown in the accompanying drawing, in which I Figure 1 is a side elevation of a portion of the complete all metal gimped material made according .to this invention; Figure 2 is a fra entary view of one form of flexiblemetallic core roughened to provide a frictional surface; Figures 3 to 5 inclusive are respectively modified 'forms of the roughened flexible metallic core. a

Referring to Figures 1 and 2 of the drawing, the reference character 6 indicates the I flexible metallic carrier core or strand,-and 7 the spirally'convolved metallic gimping applied upon and along the same. The carrier core or strand 6 is of the type shown on somewhat enlarged scale in Figure 2, and consists in a fiat ribbon-like metallic wire having substantially transversely extending corrugate portions 8, which so roughens the surface of the same as to provide the desired frictional characteristics whereby the applied convolutions of metallic gimping 7 are so engaged that tendency of the same to unduly slide on the core is resisted. As a consequence of such resistance to slip, the convolutions of the gimping are maintained in comparatively uniformly spaced relation along'the core at all times, not only'when initially forming the gimped material and when manipulating the material in the fabrication of articles carrier wire, and metallic gimping spirally convolved about and extending longitudinally along said carrier wire.

In testimony that I claim the invention set forth above I have hereunto set my hand this 27th day of October, 1930.

' RUSSELL B. KINGMAN.

therefrom, but also in the finished articles themselves.

It will be obvious that the corrugate form of frictional surface shown in Figure 2 is I only one of many forms of carrier wire deformation adapted to provide the desired frictional support for gimping, it follows therefore that the invention contemplates, broadly, any suitable form of more or less regular deformation of the carrier wire for. the pur-' pose mentioned.

Illustrative of otherforms of carrier wire deformation, I have shown in Figures 3 to 5 inclusive modifications adapted to provide the desired roughened frictional character contemplated by this invention.

Inv Figure 3 I have shown a flat ribbon-like carrier wire 9 which has been twisted on itself to provide the desired roughened frictional surface; in Figure 4 I have shown a flat ribbon-like carrier wire 10, the longitudinal margins of which have been serrated to Having thus described my invention, I

claim 1. All metallic gimped material, comprising a flat ribbon-like metallic carrier member shaped to provide lateral projections more or less regularly spaced throughout its length,

and metallic gimping spirally convolved I about and extending longitudinally along said carrier member.

2. All metallicgimped materialficomprising a flexible carrier wire having surface iriregularlties throughout its length to provlde frictional surface, and metallic gimping more or less loosely spirally convolved about and I extending longitudinally along said carrier wire, the convolutions of said gimping being held against undue longitudinal displacement by'the frictional surface of said carrier were. v

,3. All metallicgimped material, comprising a transversely corrugated flat ribbon-like 

